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US 5,109,550 AGranted
Flush water supply system for toilet stool
AssigneeToto Ltd.
InventorsAtsuo Makita, Hirofumi Takeuchi, Shinji Shibata, Noboru Shimbara
Life of this patent
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Abstract
A flush water supply system comprising a passageway valve mounted in a pipeline for supplying flush water to a toilet stool, and a control circuit for controlling the closing and opening of the passageway valve. A constant flow valve is mounted in the pipeline for keeping a predetermined amount of discharge flow, irrespective of water supply pressure.
Claims25
A flush water supply system for a toilet, comprising:
- (a) a toilet stool having a plurality of supply ports;
- (b) a pipeline means for supplying flush water to said toilet stool, said pipeline means including a passageway change-over means having a plurality of discharge ports, and a plurality of pipelines each communicating between a respective one of said dis-charge ports of said passageway change-over means and a corresponding one of said supply ports of said toilet stool;
- (c) a constant flow valve mounted in said pipeline means for obtaining a predetermined amount of dis-charge flow, the constant flow valve including a water passage and means for adjusting the cross-sectional area of the water passage after the water supply pressure reaches a predetermined value;
- (d) at least one electrically operable valve mounted in said pipeline means;
- (e) a starting-of-flush input means for accepting an input for starting the supply of flush water;
- and
- (f) a control means for driving said passageway change-over means and said electrically operable valve in response to an input for starting the supply of flush water.
4 more elements
Dependencies are inferred from the claim text.